Emergency vehicle light bar



FIG. 1 is a perspective view of a light bar for a vehicle showing my new design;

FIG. 2 is a front view thereof, which is a mirror image of the rear view thereof;

FIG. 3 is a left side view, which is a mirror image of the right side view thereof;

FIG. 4 is a top view thereof; and,

FIG. 5 is a bottom view thereof.

The broken lines in all FIGS. illustrate portions of emergency vehicle light bar that form no part of the claimed design. 

CLAIM The ornamental design for the emergency vehicle light bar, as shown and described. 